There is a burial at sea, with several bodies being wrapped and then dropped overboard.
A crewman is whipped harshly as punishment for insubordination.
Several scenes include crewmen mistreating an officer due to the ancient seafarers' superstition that bad events during a voyage are the result of a "Jonah" on board, i.e. someone whose supposed offenses against God have incurred divine wrath, despite a lack of evidence of actual misconduct.
The film opens with the ship in a dense fog and one of the younger officers suspects an enemy ship is nearby. Another officer his age whom he consults agrees and calls the ship to general quarters. As it turns out, this is a prudent decision as the ship is soon fired upon, but the crew is ready for battle.
A man drowns at sea despite the efforts of the crew to save him.
The battle scenes are all intense.
An amputation scene is intense - not especially gory, but can be extremely disturbing in its realism, even for adults.
A character commits suicide by drowning, with a friend of his witnessing the act.
Storm scenes with the ship's mast breaking and a man being lost overboard are very intense, and the sounds of the storm are very realistic.